package collection02;

/**
 * 集合间的操作
 */
import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo4 {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1: "+c1);// c1: [java, c++, .net]

        Collection c2 = new ArrayList();
        c2.add("android");
        c2.add("ios");
        c2.add("java");
        System.out.println("c2:"+c2);//c2:[android, ios, java]

        Collection c3 = new ArrayList();
        c3.add("c++");
        c3.add("android");
        c3.add("php");
        System.out.println("c3: "+c3);

        boolean contains = c1.containsAll(c3);//判断c1中是否包含C的元素
        System.out.println("是否包含: "+contains);//false

        //取交集:
        /*
        c1.retainAll(c3);//将c1中与c3所拥有的元素删除,c3不变
        System.out.println("c1:"+c1);//c1:[c++, android]
        System.out.println("c3:"+c3);//c3:[c++, android, php]
        */

        //删交集
        c1.removeAll(c3);
        System.out.println("c1"+c1);
        System.out.println("c3"+c3);


    }
}
